Phosphate Test Strips — Bulk Pack (50 units)

Bulk Pack — 50 units

Unit price: $13.99 each. Bulk pack savings for repeat-purchase lab consumables.

Phosphate test strips provide rapid, colorimetric determination of orthophosphate (PO₄³⁻) concentrations in aqueous samples. These semi-quantitative analytical strips utilize immobilized molybdate chemistry to produce color changes proportional to phosphate concentration, enabling field measurements without laboratory instrumentation. The strips measure phosphate levels across six discrete ranges from 10 to 500 mg/L PO₄³⁻, covering the concentration span encountered in most environmental and industrial water systems.

The test methodology is based on the formation of molybdophosphoric acid complexes, which produce characteristic blue coloration that can be visually matched against a standardized color chart. This approach enables semi-quantitative phosphate analysis in approximately 1-2 minutes, making it suitable for rapid screening applications where immediate results inform sampling decisions or process adjustments. The compact strip format eliminates the need for reagent preparation, sample dilution, or specialized equipment typically required for spectrophotometric phosphate analysis.